In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

[EX Q]: Article: Mail was usually carried west on ships that sailed around the bottom of South America and then north to California.That could take several months.   So, in eighteen fifty-seven, D.C.Lawmakers in Congress  in Washington wanted to make it possible to send mail all the way across the United States by land.Congress offered to help any company that would try to deliver mail overland to the West Coast. A man named John Butterfield accepted this offer. He developed plans for a company that would carry the mail--and passengers, too.  Congress gave John Butterfield six hundred thousand dollars to start his company. In return, he had to promise that the mail would travel from Saint Louis, Missouri, to San Francisco, California, in twenty-five days or less.  It was not possible to travel straight through because of the Rocky Mountains and the deep snow that fell in winter. So the stagecoach  would travel south from Saint Louis to El Paso, Texas, then over to southern California, then north to San Francisco. The distance was about four thousand five hundred kilometers. Two hundred of these stations were built, each about thirty-two kilometers apart. The workers were to quickly change the horses or mules whenever a stagecoach reached the station. There could be no delay. Each stagecoach was to travel nearly two hundred kilometers a day. One hundred stagecoaches were built and painted red or dark green. They were the most modern coaches that money could buy. They were designed to hold as many as nine passengers and twelve thousand pieces of mail. The seats inside could be folded down to make beds. Passengers either slept on them or on the bags of mail.  The cost would be one hundred fifty dollars to travel from Saint Louis to San Francisco. If a passenger was not going all the way, the cost was about ten cents a kilometer. The passengers had to buy their own food at the stations. The stagecoach would stop for forty minutes, two times a day.  The company warned passengers about the possible dangers. A poster said: "You will be traveling through Indian country and the safety of your person cannot by granted by anyone but God." 
 Answer: The history of the first stagecoaches carrying mail to the American West.
[EX A]: What is the passage mainly about?

[EX Q]: Article: Like many other places in the world, recently, Indiana education officials decided that the schools of the state will not be required to teach handwriting skills to students any longer. Instead, they will focus their energies on teaching students how to type. Is handwriting still an important skill? An online survey received some surprising responses. Handwriting is not necessary. Students only need to know how to read it, and the only time that they must write something is to make a signature. Why stress them more than they need to be stressed? We already put so much pressure on them to perform on state tests. --Rita Children don't write letters now. They send e-mails or text messages. A lot of those old ways are going away. How many bills do you pay by writing a check anymore? --Brown Although my son is not comfortable with writing, I bought a workbook for him to practice his handwriting. Can you imagine being an adult and not being able to sign a document? --Susan What a shame! I guess one day it will be a lost art, because handwriting is that personal and beautiful. It has personality --Anna The school where I worked dropped handwriting several years ago. Unless the students have computers in class, they will not be able to take notes at high speed. I have to speak very slowly and stop after a sentence or two because many students write very slowly. --Helen The same thing happened here in Tennessee this past year. I think it's a shame. I just received a handwritten letter from my stepmother and it meant that she spent time sitting and writing. Such a letter brought me a good feeling. --Kathy Children should still learn writing, for the sake of having a skill that all people can communicate with. I certainly appreciate a handwritten note of thanks or news from my children and grandchildren. --Ruth 
 Answer: The popularity of computers in schools.
[EX A]: What is the passage mainly about?

[EX Q]: Article: 2015, the time has come for more creative China tours to be made, Shanghai Disney opens, more high-speed rail options. Insisting on high-quality services, we are proud to present our ever best-selling China tour packages, tour themes and the next popular destinations. Check out the optional activities and information making our Smart Travelers' trips outstanding. China Highlights' most popular private tour. Our private guide, driver and car are available all times. You take the trip, we take the stress. Day 1-2 In Beijing Take a break on your arrival. Enjoy local people's morning exercise at the Temple of Heaven before visiting the Great Wall, and then have a lifetime experience of visiting the Mutianyu section of the Great Wall on Day 2. Day 3-4 In Xi'an Still in Beijing in the daytime of Day 3. Visit the Forbidden City and the Tian'anmen Square to feel royal life in ancient China. After that pay a visit to hutongs which give full flavor of authentic experience. Catch a flight at night to Xi'an. Private guide and driver escort you to visit the highlights of Xi'an on Day 4.[:] Day 5-7 In Guilin/Yangshuo Continue to see Xi'an and have more interacts with the local. Visiting a family in Xi'an and learning how to make different shapes of dumplings give you an unforgettable time. Take a plane at night and arrive at Guilin on Day 5. Get on board to enjoy essence of Guilin, the Li River cruise to Yangshuo. Cycle to villages and meet friendly local people and learn more about Chinese agriculture. Day 8-10 In Shanghai Private transfer from Yangshuo to Guilin airport. Shanghai guide and driver are waiting for you with smiling faces. Highlights of the city on Day 9 show you the future of China as the end of the trip. You have free time on the last day before taking an international flight. Just let us know your travel style! We will then adapt this tour and create a unique quote based on your individual needs. For more information, please click here: [Link] 
 Answer: Two.
[EX A]:
How many night flights will the tourists take during this trip?

